Drilling Platform of China National Oﬀshore Oil Corporation (CNOOC) is under high temperature and humidity environments of south China sea. Kehua provides an industrial-grade marine high-power UPS power system, including FR-UK31DL series UPS, bypass cabinet, output power distribution cabinet, batteries, explosion-proof switch boxes etc. The solution safeguards the control system, alarm system (ICMS), emergency shutdown system (ESD) for the platform.